Harvest with higher whitefly pressure
By Jacob Crosariol Netto, Mato Grosso Cotton Institute (IMA)
How the development of resistant cultivars can help in the management of stink bugs in soybeans, by helping to reduce the costs of insecticide applications and protecting the longevity of the few molecules available for chemical control
Understanding the critical period of attack by the green-bellied stink bug in corn crops, based on the stages of plant and pest development, is essential for adopting management at the correct time, in order to prevent losses and ensure greater grain yield.
A common practice on farms, tank mixtures can cause problems such as clogging spray nozzles and even reducing the effectiveness of the products. When this process involves mixing biological insecticides with chemical pesticides, the effects on the control performance of caterpillars in cotton crops can become even more evident.
In the fight against sugarcane borer, root leafhoppers and Sphenophorus levis, the main pests in sugarcane, the best path lies in the adoption of integrated management, with the use of cultural, varietal, biological and chemical techniques. Among biological control strategies, the use of entomatogenic fungi plays an important role in combating these insects.
The presence of tiguera plants, which provide shelter and food for the insect during the off-season and soybean cultivation period, are among the factors that help explain the higher incidence. Seed treatment with neonicotinoid insecticides, associated with other integrated and preventive strategies, has shown good results in managing this pest.
The most important pest of coffee plants, the leaf miner is favored by dry periods, with greater sunshine and low air humidity; Responsible for intense defoliation, these insects require chemical control to maintain productivity, especially in regions with hot climates.